Learn more about this area code and exchange and where the caller may be located.
The phone exchange is the three digits after the area code and before the extension. An example is (779) 339-XXXX where 339 is the exchange number. It enables telephone line extensions to be interconnected in a local area based on a specific geographic assignment.
The (779) 339 exchange is located within the 779 area code in Chicago, IL. It connects landline numbers from the AT&T Mobility carrier in Will county. Associated zip codes include 60423.
Potentially, callers could keep their phone numbers even if they move away, so a caller may be located in Chicago, IL or elsewhere. You can use a reverse phone lookup to help find the registered address for a potential caller.
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(779) 339-9804 - January 3rd, 2026 2:52pm
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